Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John E Barnes MD Inc

Neurology Physician in Mt View, CA · enumerated 2007 · authorized official John Barnes, MD/Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1427247527

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Registry record

Entity type Organization (Type 2)

Legal business name John E Barnes MD Inc

Practice address 2500 Hospital Drive, Building 2, Mt View, CA, 94040

Phone (650) 962-0236

Fax (650) 962-8279

Enumeration date Oct 15, 2007

Last updated in NPPES Oct 15, 2007

Taxonomy & classification

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License G22446 (CA) Primary

Authorized official

Name John Barnes

Title MD/Owner

Phone (650) 962-0236

Other identifiers

Identifier	Type	State	Issuer
00G224460	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-10-15. Verify at npiregistry.cms.hhs.gov.

Where is John E Barnes MD Inc located?

The practice location on file with NPPES is in Mt View, CA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-15.